In May 2001, east Delhi slept on its roofs because the power was out and the nights were unbearable. Then somebody shouted. Within two weeks, four hundred people had reported being attacked by a creature that did not exist
To understand what happened in Delhi in May 2001, you have to start with the heat.
In the poorer parts of east Delhi, summer nights inside a small room are unbearable, and the power supply was failing for hours at a time. So people did what they had always done: they took their bedding up to the roof, or out onto the terrace, and slept in the open air, close to their neighbours, in the dark.
Then, one night, somebody screamed.
People slept on the roofs because the rooms were unbearable. Then somebody screamed.
Two weeks
Between 10 and 25 May 2001, the Delhi police received 397 reports of attacks by what the city began calling the monkey man, or Kala Bandar.
The descriptions did not agree with each other, and they did not agree with any animal. Some said a hairy ape-like figure. Some said a short man. Some added metal claws, glowing red eyes, a helmet, buttons on its chest, even roller skates. The police issued artists’ sketches based on what witnesses told them, and the sketches looked like comic-book villains, because that is what they were built from.
The pattern of the reports was consistent, though. Almost all came from poor, crowded neighbourhoods. Two-thirds of the incidents were between midnight and six in the morning. Nearly all of them happened when the lights were out.
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The injuries
This was not simply people imagining things. Of the hundreds who reported attacks, around fifty were examined medically, and many had real wounds.
A medical board was set up, and its findings were later published in the Indian Journal of Medical Sciences. Most of the injuries were abrasions, with some lacerations, and the great majority of victims were adult men from poor households with little schooling.
The doctors’ conclusion was that the injuries were accidental in nature, of the kind caused by a blunt or pointed object: the sort of thing you get scrambling in the dark across a rough terrace, over a parapet, down an unlit staircase, or into a wall.
The wounds were real. What made them was panic.
The wounds were real. What made them was panic.
The dead
And then it stopped being a story about scratches.
On 15 May, a pregnant woman in east Delhi ran from what she believed was the creature and fell down a dark flight of stairs. She was taken to hospital and died. A police officer who examined her confirmed there were no bites or claw marks on her body: she had died of a head injury.
A man fell to his death from a rooftop while fleeing. By most accounts another man died the same way, running in the dark, not because he had seen anything, but because he had heard his neighbour screaming that something had pulled at his sheets.
Mobs formed. Young men patrolled lanes with sticks. In at least one case a wandering holy man was set upon and beaten by a crowd that decided he was the monster.
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The response
The Delhi Police did what a police force can do. They put thousands of extra personnel on night patrol, opened a hotline that took hundreds of calls, and announced a reward of fifty thousand rupees for the capture of the creature or hard evidence that it existed.
Nobody ever claimed it. There was no fur, no footprint, no photograph, no body, no captured suspect.
What did help was much simpler. The electricity company agreed to stop the rolling blackouts in some of the worst-affected neighbourhoods, so that people could sleep inside with their fans running, behind closed doors.
The reports faded. Within a couple of weeks it was over.
What it was
Researchers who studied the episode class it as mass hysteria, and the word deserves care, because it is often used as an insult.
Nobody in east Delhi was mad or stupid. They were hot, exhausted, sleeping outdoors in the dark in crowded neighbourhoods, with the power cut and the newspapers full of a creature that leapt across rooftops. In that situation, a scream from the next roof is not an odd thing to run from. It is the sensible thing to do.
The rumour supplied the monster. The heat and the blackouts supplied the rooftops. The dark supplied the rest: the walls to run into, the stairs to fall down, the edges that were not where you thought they were.
The monkey man never existed. Two people died of him anyway, and by most accounts three.
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If you think you have remembered everything about this topic take this QUIZ
Results
#1. In which year did the “Monkey Man” panic occur in New Delhi?
#2. What environmental conditions contributed to the mass hysteria according to the text?
#3. What was a common detail victims agreed upon regarding the creature’s appearance?
#4. How did medical experts from AIIMS explain the “claw marks” on the victims?
#5. What cash reward did the Delhi Police offer for evidence or the capture of the creature?
#6. What was the “Ultimate Scientific Conclusion” regarding the Monkey Man phenomenon?
#7. Which Bollywood movie used the “Kaala Bandar” as a symbolic metaphor?
#8. When did the reports of the creature mysteriously vanish?
Who or what was the Monkey Man of Delhi?
The Monkey Man was a mysterious, alleged creature described as half-monkey and half-man with metallic claws and glowing eyes, which caused massive panic in New Delhi in 2001.
Did the police ever catch the creature?
No. Despite offering massive cash rewards, setting up traps, and deploying thousands of officers, the police never found a single piece of physical evidence that the creature actually existed.
How did people actually die during the panic?
Tragically, the deaths were caused by the sheer panic itself. Frightened individuals died from accidentally falling off unlit rooftops or plunging down dark stairs while trying to run away from imaginary shadows.
What was the final scientific conclusion?
Top psychiatrists and medical experts concluded that the entire phenomenon was a massive case of mass hysteria triggered by severe heatwaves, electrical blackouts, and intense psychological stress.
Where did the scratch marks on the victims come from?
Medical professionals determined the injuries were incredibly common occurrences, such as bites from urban rats or stray dogs, or superficial scratches from rough bedding, which were falsely attributed to the monster due to extreme paranoia.
Sources & References
“A study on mass hysteria (monkey men?) victims in East Delhi”, Indian Journal of Medical Sciences 57(8) (2003) — the 397 reports between 10 and 25 May 2001, the socio-demographic profile of the victims, the timing during power failures, and the finding that the injuries were accidental in nature.
Skeptical Inquirer, “The Monkey Man panic: 20 years later” (21 May 2021) — the pattern of the wounds, the deaths from falls, and the suspension of rolling blackouts in poorer neighbourhoods.
Reuters contemporaneous reporting from May 2001 — contradictory witness descriptions, heightened police deployment and the official response to the Monkey Man panic in Delhi.
Decoding the Unknown, “The Monkey Man of Delhi” (2025) — the death of the pregnant woman and the police officer’s statement that no bites or claw marks were found.
